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ldso: support DT_RELR relative relocation format
[musl]
/
src
/
stdio
/
fseek.c
diff --git
a/src/stdio/fseek.c
b/src/stdio/fseek.c
index
439308f
..
c07f7e9
100644
(file)
--- a/
src/stdio/fseek.c
+++ b/
src/stdio/fseek.c
@@
-1,7
+1,14
@@
#include "stdio_impl.h"
#include "stdio_impl.h"
+#include <errno.h>
int __fseeko_unlocked(FILE *f, off_t off, int whence)
{
int __fseeko_unlocked(FILE *f, off_t off, int whence)
{
+ /* Fail immediately for invalid whence argument. */
+ if (whence != SEEK_CUR && whence != SEEK_SET && whence != SEEK_END) {
+ errno = EINVAL;
+ return -1;
+ }
+
/* Adjust relative offset for unread data in buffer, if any. */
if (whence == SEEK_CUR && f->rend) off -= f->rend - f->rpos;
/* Adjust relative offset for unread data in buffer, if any. */
if (whence == SEEK_CUR && f->rend) off -= f->rend - f->rpos;